Protective device for pool foundation pit

By employing a multi-layered reinforced structure and modularly designed protective device in the water tank foundation pit, the problems of horizontal displacement and seepage damage in the foundation pit were solved, achieving efficient compressive strength and seepage resistance, and improving construction safety and efficiency.

CN224395575UActive Publication Date: 2026-06-23WEST AIRPORT GRP CONSTR ENG XIAN CO LTD
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Patent Information

Application Number
CN202521566188.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-25
Publication Date
2026-06-23
Estimated Expiration
2035-07-25

AI Technical Summary

Technical Problem

The existing foundation pit protection devices are insufficient in controlling horizontal displacement, leading to seepage damage under the influence of groundwater level changes and surrounding loads. This makes it difficult to meet the high requirements for waterproofing performance of water tank-type structures and poses safety hazards during construction.

Method used

The protective device adopts a multi-layered reinforced structure, including a three-dimensional support system consisting of double-ribbed bars built into the main guardrail, reinforcing rib seats and reinforcing rib columns inside the hollow core plate, combined with modular design and quick fixing with locking bolts, forming a highly efficient anti-seepage protection.

Benefits of technology

It effectively reduced the deformation of the foundation pit, improved the compressive strength and impermeability, increased construction efficiency and reusability, and reduced project costs.

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Abstract

The utility model relates to the technical field of foundation pit protection, and discloses a protective device for a pool foundation pit, which at least comprises a group of two main protective barriers, two connecting plates and auxiliary protective barriers arranged between the two connecting plates at equal intervals, and movable seats are fixedly mounted on the inner sides of the connecting plates at equal intervals. According to the device, overall optimization of a protection system is achieved through a multi-layer reinforcing structure. A parallel reinforcing structure is formed by the design of the double-rib rods arranged in the main protective barrier, the horizontal soil pressure of the side wall of the foundation pit is effectively resisted, and through experimental measurement and calculation, under the same load condition, the rod body deformation amount is reduced by more than 40% compared with a traditional single-layer structure. A three-dimensional supporting system is formed by a grid framework formed by the reinforcing rib bases and the reinforcing rib columns adopted in the hollow-core plate, the diameter of each reinforcing rib column is 1 / 3-1 / 2 of the height of the corresponding reinforcing rib base, annular reinforcing ribs are arranged on the surface of each reinforcing rib column, and the compressive strength of the hollow-core plate is improved to 8 MPa or above through parameter configuration.
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